seven seas

seven seas

all the oceans of the world

seven seas

also Seven Seas

plural noun

All the oceans of the world.

seven-seas

Noun

(uncountable)

(poetic) All of the oceans of the world. (In a common modern interpretation, the seven seas are the North and South Atlantic, North and South Pacific, Indian, Arctic and Antarctic, but historical interpretations differ widely; see the Wikipedia article for this.)